Mo. Rev. Stat. § 56.305: Judicial paroles — duties (third and fourth class counties).

The prosecuting attorney in counties of the third and fourth classes shall attend all hearings and applications for judicial paroles and investigate all applications for judicial paroles, make a complete investigation of all the facts and circumstances surrounding the applicant, his home life, family and business, make a report of his findings thereon to the circuit judge and make such recommendation as he deems necessary and advisable to the circuit judge.